mysql 行转列问题

Posted 2023-05-08

想查询结果展示为： id valueinspectiondate 2016-07-26qiangxiandate 2016-12-28shangyexiandate 2016-05-04

case when就可以完成行转列
select case id when \'inspectiondate\' then \'2016-07-26\' when \'qiangxiandate\' then \'2016-12-28\' when \'shangyexiandate\' then \'2016-05-04\' else \'\' end
from 表名。。。。 参考技术A 用case wen then end

Mysql 行转列

Mysql 行转列

select * from  t_zg_asset_statistic_info a 
where a.BATCH_NO=\'ss20170123181418\' 
;

这是原始数据：

这是行转列后的样子：

select
 a.DEBT_TYPE, 
sum(case  WHEN DEBT_TYPE =\'0\'  THEN AMOUNT END) \'初债\',
sum(case  WHEN DEBT_TYPE =\'1\'  THEN AMOUNT END) \'二级债\' 
,
 CONVERT(group_concat(DEBT_TYPE,\'总量:\', AMOUNT) USING utf8) as \'拼接合计\',
sum(AMOUNT) as \'合计\'
  from  t_zg_asset_statistic_info a 

where a.BATCH_NO=\'ss20170123181418\'
GROUP BY  a.DEBT_TYPE
ORDER BY a.DEBT_TYPE
;

后记：mysql  BLOB字段转String的方法

CONVERT(group_concat(DEBT_TYPE,\'总量:\', AMOUNT) USING utf8)